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US 11,623,504 B2Granted
System for vehicle noise and vibration reduction
AssigneeKarma Automotive LLC
InventorsShashank Vijay, Melody Vo, James Knittel
Life of this patent
Estimating the term…
Abstract
A drive module for an electric vehicle having noise, vibration, and harshness counter measures. The drive module includes multiple covers and mass dampeners in order to detune vibration and noise from the cabin of the vehicle.
Claims19
A vehicle comprising:
- wheels;
- an electric motor configured to drive at least one of the wheels;
- a gearbox connected to the electric motor, the gearbox configured to change a drive ratio between the electric motor and the at least one of the wheels driven by the electric motor;
- and
- an electric motor acoustic wrap covering the electric motor, the electric motor acoustic wrap comprising an electric motor attachment that attaches the electric motor acoustic wrap to the electric motor while the electric motor acoustic wrap is covering the electric motor.
2 more elements
A vehicle comprising:
- wheels;
- an electric motor configured to drive at least one of the wheels;
- a gearbox connected to the electric motor, the gearbox configured to change a drive ratio between the electric motor and the at least one of the wheels driven by the electric motor;
- and
- an acoustic wrap covering the gearbox and configured to dampen noise from the gearbox, the acoustic wrap comprising one or more attachment tabs configured to hold the acoustic wrap onto the gearbox when the acoustic wrap is covering the gearbox.
2 more elements
A vehicle comprising:
- wheels;
- an electric motor configured to drive at least one of the wheels;
- and
- a mass dampener assembly attached to the electric motor and configured to reduce vibration, the mass dampener assembly comprising:
- an insert located inside an opening of a frame of the electric motor;
- a detuning mass;
- a plate disposed between the insert and the detuning mass;
- and
- a bolt extending through the detuning mass, the plate, and the insert, the bolt configured to attach the mass dampener assembly to a mounting structure of the vehicle.
6 more elements
Dependencies are inferred from the claim text.